板栗黄化及铁、钙营养关系的研究

A Study on the Yellowing of Chestnut and the Relationship between Fe and Ca Content

本文为板栗(Castanea mollissima Blume)黄化机制研究的铁、钙之间关系部分。土壤CaCO_3含量大于2.00％的三个处理,栗株均呈黄化症。黄化株叶和根的全钙量较正常株明显增加,尤其叶钙量是正常株的3—4倍。而叶铁减少,根铁明显增加;施CaCO_3与不施CaCO_3相比较,栗株叶钙、根钙和根铁前者均大于后者,唯有叶铁前者小于后者,又以叶活性铁的降低尤为显著。叶活性铁与叶绿素含量呈显著正相关,叶活性铁减少,影响叶绿素的形成,栗产生黄化。

This article is about the study on the relationship between Fe and Ca of chestnut, which is a part of the study on the yellowing mechanism. The chestnut plant turns yellow by using the three ways of solving that CaCO_3 content in soil is more than 2.00％. The total Ca in the leave, and roots of the yellowing plant increases apparently in comparisones with normal chestnut plant, espacially the Ca in the leaves is 3-4timthan that in the plant. Whereas Fe in the leaves deseases, and Fe in the roots increases evidently. Ca in the leaves, Ca and Fe in the roots under the conditions of using CaCO_3 are more than that under the condi tions of not using it. Only Fe in the leaves is less than the latter, and espacially the active Fe decreases evidently. Active Fe in leaf and Chlorophyll appears remarkably direct ration. The form of Chlorophyll is influnced and chestnut turns yellow when active Fe decreases.